/*-
 * Copyright (c) 2009-2010, Oleg Estekhin
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the distribution.
 *  * Neither the names of the copyright holders nor the names of their
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

package oe.math.complex.research.util;

/** A complex function of two variables. */
public abstract class BinaryFunction implements Function {

    @Override
    public double[] calculate( double... arguments ) {
        return calculate( arguments[ 0 ], arguments[ 1 ], arguments[ 2 ], arguments[ 3 ] );
    }

    /**
     * Calculates (a + bi) op (c + di) = (e + fi) and returns [e, f].
     *
     * @param a the real part of the first complex argument
     * @param b the imaginary part of the first complex argument
     * @param c the real part of the second complex argument
     * @param d the imaginary part of the second complex argument
     *
     * @return an array with the real and imaginary parts of the complex result
     */
    public abstract double[] calculate( double a, double b, double c, double d );

}
